I installed Owncloud on Ubuntu 12.04 with an apache server. I use ssl for authentication but when sharing links and data it is cumbersome for the user to accept the self signed certificate. Is there a way to disable the automatic redirect to https? I did not see any related commands in the .htaccess file. Thanks
SSL is enforced by the OwnCloud installation routine in your Web server as a rewrite rule. Unchecking the box in the OC FrontEnd won't help. This can be regarded as bug.
To change this, you will have to edit your Web server config. For instance, if you chose nginx as your Web server, uncomment the https rewrite rule in your nginx config file.
Open your config file in an editor:
sudo emacs /etc/nginx/sites-enabled/default
For Apache it should be somewhere in /etc/httpd/conf.d/ssl.conf
Comment out or change the lines containing (this is for nginx):
Re-Read the nginx config files:
sudo kill -HUP `cat /var/run/nginx.pid`
For other servers see:
http://doc.owncloud.org/server/5.0/admin_manual/installation/installation_others.html